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See RFC for background: http://lists.llvm.org/pipermail/llvm-dev/2020-June/142744.html Note that the runtime changes will be sent separately (hopefully this week, need to add some tests). This patch includes the LLVM pass to instrument memory accesses with either inline sequences to increment the access count in the shadow location, or alternatively to call into the runtime. It also changes calls to memset/memcpy/memmove to the equivalent runtime version. The pass is modeled on the address sanitizer pass. The clang changes add the driver option to invoke the new pass, and to link with the upcoming heap profiling runtime libraries. Currently there is no attempt to optimize the instrumentation, e.g. to aggregate updates to the same memory allocation. That will be implemented as follow on work. Differential Revision: https://reviews.llvm.org/D85948 |
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| .. | ||
| AddressSanitizer | ||
| BoundsChecking | ||
| DataFlowSanitizer | ||
| HeapProfiler | ||
| HWAddressSanitizer | ||
| InstrOrderFile | ||
| InstrProfiling | ||
| MemorySanitizer | ||
| PoisonChecking | ||
| SanitizerCoverage | ||
| ThreadSanitizer | ||
| cgprofile.ll | ||